A couple of thoughts re canisters. I learned this even before I owned my first canister and was taught it by a gent who had 50+ year working in the field of pets and fish (mostly fish) and keeping fish at home as well.
He hated hoses as they have a tendency to be prone to detaching over time. I use hose clamps on all my hose connections.
I also have a habit of drilling extra holes in spray bars. I add several small holes about 90 degrees around from the ones the bar comes with. This results in redirecting some of the outflow downward which brings some circulation to what would normally be close to a dead zone.
Finally, the flow rate one can get from the return of a canister depends upon how far below the tank the canister is placed. There are a couple of tanks under which I place a riser on which the canister sits. This decreases the distance the water must rise to enter the tank. For the 350 the max. height it can lift water is 5'10" (1.8m).
Of my three identical canisters, the one I most like is the one which uses only Poret foam inside it. No floss, no Efimech or Efistrat, just 20 ppi foam filling both baskets. It needs cleaning about every 3+ years.
